package com.hengpeng.msls.util;

import java.io.IOException;
import java.io.InputStream;
import java.io.Writer;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

import org.dom4j.Document;
import org.dom4j.Element;
import org.dom4j.io.SAXReader;

import javax.servlet.http.HttpServletRequest;

import com.hengpeng.msls.vo.message.resp.Article;
import com.hengpeng.msls.vo.message.resp.ResMusicMessageVo;
import com.hengpeng.msls.vo.message.resp.ResNewsMessageVo;
import com.hengpeng.msls.vo.message.resp.ResTextMessageVo;

import com.thoughtworks.xstream.XStream;
import com.thoughtworks.xstream.core.util.QuickWriter;
import com.thoughtworks.xstream.io.HierarchicalStreamWriter;
import com.thoughtworks.xstream.io.xml.PrettyPrintWriter;
import com.thoughtworks.xstream.io.xml.XppDriver;

import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URL;

/**
 * 消息工具类
 * 
 * @author ChenXiaobao
 * @date 2014-3-18 下午03:00:11
 */

public class MessageUtil {

    // 福彩定投第三方用户唯一凭证
    public static final String appId = "wxdcd196aebbe18436"; // wxb97474f9d9dfcca1
                                                             // 测试
    // 福彩定投第三方用户唯一凭证密钥
    public static final String appSecret = "b2186a19989e8160562ffd9ad605a63b"; // 9c6b7576901918dbeb7ab28c8de898b2
                                                                               // 测试

    // 深圳福彩第三方用户唯一凭证
    public static final String szfcAppId = "wxb5ff39a4ebe5c001";
    // 深圳福彩第三方用户唯一凭证密钥
    public static final String szfcAppSecret = "71c4d528cf2422bdcf65bc47599c7e13";

    // 体彩定投第三方用户唯一凭证
    public static final String tcdtAppId = "wxb454f7481ff168b0";
    // 体彩定投第三方用户唯一凭证密钥
    public static final String tcdtAppSecret = "9dbe0ad3abdf759595111926812237b1";

    /**
     * 返回消息类型：文本
     */
    public static final String RESP_MESSAGE_TYPE_TEXT = "text";

    /**
     * 返回消息类型：音乐
     */
    public static final String RESP_MESSAGE_TYPE_MUSIC = "music";

    /**
     * 返回消息类型：图文
     */
    public static final String RESP_MESSAGE_TYPE_NEWS = "news";

    /**
     * 请求消息类型：文本
     */
    public static final String REQ_MESSAGE_TYPE_TEXT = "text";

    /**
     * 请求消息类型：图片
     */
    public static final String REQ_MESSAGE_TYPE_IMAGE = "image";

    /**
     * 请求消息类型：链接
     */
    public static final String REQ_MESSAGE_TYPE_LINK = "link";

    /**
     * 请求消息类型：地理位置
     */
    public static final String REQ_MESSAGE_TYPE_LOCATION = "location";

    /**
     * 请求消息类型：音频
     */
    public static final String REQ_MESSAGE_TYPE_VOICE = "voice";

    /**
     * 请求消息类型：推送
     */
    public static final String REQ_MESSAGE_TYPE_EVENT = "event";

    /**
     * 事件类型：subscribe(订阅)
     */
    public static final String EVENT_TYPE_SUBSCRIBE = "subscribe";

    /**
     * 事件类型：unsubscribe(取消订阅)
     */
    public static final String EVENT_TYPE_UNSUBSCRIBE = "unsubscribe";

    public static final String EVENT_TYPE_SCAN = "SCAN";

    public static final String EVENT_TYPE_LOCATION = "LOCATION";
    /**
     * 事件类型：CLICK(自定义菜单点击事件)
     */
    public static final String EVENT_TYPE_CLICK = "CLICK";

    /**
     * 解析微信发来的请求（XML）
     * 
     * @param request
     * @return
     * @throws Exception
     */
    @SuppressWarnings("unchecked")
    public static Map<String, String> parseXml(HttpServletRequest request) throws Exception {
        // 将解析结果存储在HashMap中
        Map<String, String> map = new HashMap<String, String>();

        // 从request中取得输入流
        InputStream inputStream = request.getInputStream();
        // 读取输入流
        SAXReader reader = new SAXReader();
        Document document = reader.read(inputStream);
        // 得到xml根元素
        Element root = document.getRootElement();
        // 得到根元素的所有子节点
        List<Element> elementList = root.elements();

        // 遍历所有子节点
        for (Element e : elementList)
            map.put(e.getName(), e.getText());

        // 释放资源
        inputStream.close();
        inputStream = null;

        return map;
    }

    /**
     * 文本消息对象转换成xml
     * 
     * @param textMessage
     *            文本消息对象
     * @return xml
     */
    public static String textMessageToXml(ResTextMessageVo textMessage) {
        xstream.alias("xml", textMessage.getClass());
        return xstream.toXML(textMessage);
    }

    /**
     * 音乐消息对象转换成xml
     * 
     * @param musicMessage
     *            音乐消息对象
     * @return xml
     */
    public static String musicMessageToXml(ResMusicMessageVo musicMessage) {
        xstream.alias("xml", musicMessage.getClass());
        return xstream.toXML(musicMessage);
    }

    /**
     * 图文消息对象转换成xml
     * 
     * @param newsMessage
     *            图文消息对象
     * @return xml
     */
    public static String newsMessageToXml(ResNewsMessageVo newsMessage) {
        xstream.alias("xml", newsMessage.getClass());
        xstream.alias("item", new Article().getClass());
        return xstream.toXML(newsMessage);
    }

    public static String getbasePath(HttpServletRequest request) {
        String path = request.getContextPath();
        String basePath = request.getScheme() + "://" + request.getServerName() + ":" + request.getServerPort() + path
                + "/";
        return basePath;
    }

    /**
     * 扩展xstream，使其支持CDATA块
     * 
     * @date 2013-05-19
     */
    private static XStream xstream = new XStream(new XppDriver() {
        public HierarchicalStreamWriter createWriter(Writer out) {
            return new PrettyPrintWriter(out) {
                // 对所有xml节点的转换都增加CDATA标记
                boolean cdata = true;

                @SuppressWarnings("rawtypes")
                public void startNode(String name, Class clazz) {
                    super.startNode(name, clazz);
                }

                protected void writeText(QuickWriter writer, String text) {
                    if (cdata) {
                        writer.write("<![CDATA[");
                        writer.write(text);
                        writer.write("]]>");
                    } else {
                        writer.write(text);
                    }
                }
            };
        }
    });

    /**
     * Description: 获取指定URL的内容
     * 
     * @Version1.0 2012-6-1 下午02:18:22 by Albert（albertwxh@gmail.com）创建
     * @param tempurl
     *            url地址
     * @param code
     *            url页面编码
     * @return
     * @throws IOException
     */
    public static String getHTML(String tempurl, String code) throws IOException {
        URL url = null;
        BufferedReader breader = null;
        InputStream is = null;
        StringBuffer resultBuffer = new StringBuffer();
        try {
            url = new URL(tempurl);
            HttpURLConnection conn = (HttpURLConnection) url.openConnection();
            is = conn.getInputStream();
            breader = new BufferedReader(new InputStreamReader(is, code));
            String line = "";
            while ((line = breader.readLine()) != null) {
                resultBuffer.append(line);
            }
        } catch (MalformedURLException e) {
            e.printStackTrace();
        } finally {
            breader.close();
            is.close();
        }
        return resultBuffer.toString();
    }
}
